Improvement in bung-bushes



A. 0. M'I'ILLER. Bung-Busher.

No. 222,936. Patented Dec. 23,1879.

WITNESSES:' I NVBN TORf W flamw/ BY ATTORNEYS.

N. PETERS, FHOTO-UTNOGRAPHER. WASHINGTON, D. O.

the axis of the bore g.

UNITED STATES PATENT OE IoE ADELBERT O. MULLER, OF FREMONT,'NEBRASKA.

IMPROVEMENT IN BUNG-BUSHES Specification forming part of Letters Pateflt No. 222,936, dated December 253, 1679; application filed October 30, 1879.

To all whom it may concern:

Be it known that I, ADELBERT O. MI'iLLER, of Fremont, in the county of Dodge and State of Nebraska, have invented a new Improvement in Bung-Bushes, of which the following is a specification.

The object of my invention is to provide a bushing that willprotect the bung-holeagainst oharrin g during the operation of pitching the nal section of a portion of a stave containing the bung-hole, showing the manner of placing the bushing in the bung-hole.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, the outside part, A, of the bushing is composed of acylindrical sleeve, a, with a conoidal bore, 1), and an external screw-thread, c,- and from the outside end, 61, of the sleevea projects a circumferential flange, e. The inside part, B, of the bushing consists of a conoidal sleeve, f, with a cylindrical screw-threaded bore, g. 0n theinside end, h, of the sleeve f is a circumferential flange, 'i, and on the exterior surface of the sleeve f is a V-shaped feather, j, parallel to The manner of applying the bushing is clearly shown in Fig. 3. The part B is driven into the bung-hole 0 from k the inside of the bung-hole from the outside, and screwed into the part B until the flange e bears upon the outside of the stave around the bung-hole, as-

shown.

By screwing part A in part B this latterpart (which is prevented from turning in the stave byfeather j) is drawn up in the bun g-hole until its flange t presses against the stave so closely as to form a liquid-tightjoint without the use of any packing; and when, by the shrinkage of the stave or from any cause, the bushing be comes loosened in the bun g-hole, it can be quickly and efficientl y tightened by screwing part A farther into B, and drawing this part farther up into the bung-hole and the flange more tightly against the stave.

In addition to the advantages in the way of tightening the bushing obtained by my invention is another advantage, arising from the protection afforded to the inside edges of the bung-hole by the flange 11 against charring when the barrel, keg, or cask is being pitched.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

As an improvement in bushings for bungholes, the exteriorly-cylindrical screw-threaded part A, provided with flange e, in combination with the eXteriorly-conoidal part B, provided with an internal screw-thread, flange t, and V-shaped feather j, as and for the purpose substantially as described.

'ADELBERT OSWALD MULLER.

Witnesses:

()TTo MAGENAW, CHAS. H. BRUNNER. 

